/*
 Problem Description
Now give you two integers n m, you just tell me the m-th number after radix point in 1/n,
for example n=4,the first numble after point is 2,the second is 5,and all 0 followed
 
Input
Each line of input will contain a pair of integers for n and m(1<=n<=10^7,1<=m<=10^5)
 
Output
For each line of input, your program should print a numble on a line,according to the above rules
 
Sample Input
4 2
5 7
123 123
 
Sample Output
5
0
8

 */
package com.yuan.algorithms.acm201506;

import java.util.Scanner;

public class HD2117求小数点后n位 {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		while (sc.hasNext()) {
			int n = sc.nextInt();
			int k = sc.nextInt();
			int t = 0;
			int r = 0, z = 1;
			while (t <= k) {
				r = z / n;
				z %= n; 
				//以除尽而没达到要求的小数点，则直接赋0并跳出循环
				if (z == 0 && t != k) {
					r = 0;
					break;
				}
				if (z < n) {
					++t;
					z *= 10;
				}
			}
			System.out.println(r);
		}
	}

}
